判断下列句子是否正确,不正确的请改正.（看详细提问）

1、I could not find my pen everywhere.【everywhere改成anywhere】
2、Be quiet.Every one is asleep.【Every one改成Everyone】
3、Every coin have two sides.【have改成has】
4、He droped some coins onthe floor.【droped改成dropped】
5、My wife is cooking while I was working in the garden.【is改成was】
6、Just I was opening the door,the telephone rung.【rung改成rang】
7、She slipped while she got off the bus.【while改成when】
8、Two thiefs entered the dining room.【thiefs改成thieves】
9、He heard her voice and opened the light.【opened改成turned on】
10、Too late!It had yet happened.【yet改成already】

1 anywhere
2
3 has
4
5 was
6 just改成 when
7
8thieves
9
10 yet 改成always
不肯定